GIS & Land Preservation

GIS & Land PreservationGIS & Land PreservationChad Hoover,GISP

Steuben County GIS Coordinator

Steuben County Land Trust GroupSteuben County Land Trust Group

• How can we target areas within the County to Preserve?

• What about Endangered Species Data?

• How do we do this?

• Need Specific Criteria to determine areas

• What other data is available

Data SourcesData Sources• County GIS Data

– Planimetric bodies of water from 2003 photography

– Streams, Rivers & Open Drains from 2003 & Surveyors Data

– Soils Data

• Other Data– Indiana DNR, Div. of Nature Preserves,

National Heritage Data (Non-Disclosure Agreement)

– USFWS, Indiana Biodiversity Initiative– USFWS, National Wetland Inventory

Preservation CriteriaPreservation Criteria

1. Parcels near terrestrial communities1. Parcels near terrestrial communities

2. Parcels near vertebrates2. Parcels near vertebrates

3. Parcels near invertebrates3. Parcels near invertebrates

4. Parcels near vascular plants4. Parcels near vascular plants

5. Parcels near bodies of water5. Parcels near bodies of water

6. Parcels near linear water6. Parcels near linear water

7. Parcels near hydric soils7. Parcels near hydric soils

8. Parcels near NWI (National Wetland Inventory)8. Parcels near NWI (National Wetland Inventory)

Created data layer based on each parcel selection & criteria

Created data layer based on each parcel selection & criteria

• Select each set by location

• Export each out to its own shapefile

Converted each data layer to Raster

Converted each data layer to Raster

Give values of 0 & 1 for cell in each layer, making each layer Binary Code

Conditional Statement

Give values of 0 & 1 for cell in each layer, making each layer Binary Code

Conditional Statement

After Rasters were created for each polygon, Used Raster calculator

After Rasters were created for each polygon, Used Raster calculator

• Command line and scripting– http://webhelp.esri.com/arcgisdesktop/9.2/ind

ex.cfm?topicname=con_

After Rasters were created for each polygon, Used Raster calculator

After Rasters were created for each polygon, Used Raster calculator

Geoprocessing Arc Toolbox ForumReclassing no data to 0

http://forums.esri.com/Thread.asp?c=93&f=983&t=298513

Once each Raster is given values of 0, or 1, Add all 8 layers together

Once each Raster is given values of 0, or 1, Add all 8 layers together

Land Trust Preservation AreasLand Trust Preservation Areas

Areas Meeting 8 CriteriaAreas Meeting 8 Criteria

• Pokagon State Park

• Marsh Lake Conservation Area

• The Nature Conservancy’s Douglas Woods

• DNR Div. Nature Preserves Lime Lake Area

Areas Meeting 7 CriteriaAreas Meeting 7 Criteria

• Pokagon State Park

• Trine Recreational Area & Acres Wing Haven

• Warner Lake

• Mongo State Wildlife Area

• Fish Lake, near Town of Fremont

Areas Meeting 6 CriteriaAreas Meeting 6 Criteria

Areas Meeting 6 or More CriteriaAreas Meeting 6 or More Criteria

How do we use this information?How do we use this information?

• Use information to target properties.

• Narrow search for protective areas down.

• See if areas connect to existing protected areas, preserves or DNR properties.

• Provide information back to local Landtrust Group and DNR officials for future planning purposes.

QUESTIONS?QUESTIONS?

Chad Hoover, GISP

Steuben County Government

choover@co.steuben.in.us

260-668-1000 ext. 1228